Home / 13,422.84-20,103.58-6,407.79

Finding the Fourth Proportional to 13,422.84, 20,103.58 and 6,407.79

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Solution

The fourth proportional to 13,422.84, 20,103.58 and 6,407.79 is: 9,597.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,422.84 : 20,103.58 = 6,407.79 : x
  2. Step 2: Convert to fraction form
    13,422.84/20,103.58 = 6,407.79/x
  3. Step 3: Cross multiply
    13,422.84x = 20,103.58 × 6,407.79
  4. Step 4: Simplify right side
    13,422.84x = 128,819,518.89
  5. Step 5: Solve for x
    x = 128,819,518.89/13,422.84
  6. Step 6: Final answer
    x = 9,597.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.